The Duke and Duchess of Sussex's whirlwind tour of South Africa continues, with the Duchess Meghan Markle making her second stop on Tuesday to visit Action Aid, a non-profit focused on women's rights, social justice and poverty. For the occasion, the Duchess changed out of her Banana Republic getup from earlier into an olive-colored button-up dress made by Room 502. She paired the look with simple black pumps and a pair of woven Pichulik earrings.

The $455 dress signaled an ongoing theme for the Duchess: the championing of ethical fashion. You may not be familiar with Room 502, as it's a brand-new label started by designer Sophie Theallet, who was trained under Azzedine Alaïa and whose eponymous brand was a favorite of Michelle Obama and Anna Wintour. Theallet started Room 502 with her partner Steve to create luxury fashion in "the most ethical way possible," according to the brand's website. Considering the brand's newness, a stamp of approval from the Duchess is likely to provide a huge bump in brand awareness and, potentially, sales.